Images

Bathymetric map of offshore northern California reveals seafloor features and submarine canyons.

Schematic cross-section of the accretionary wedge along the Cascadia subduction zone. Modified from Moore and others, 2007.

 01328770 Hudson River at Thompson, Justin Rappold making an Acoustic Doppler Current Profiler (ADCP) discharge measurement.

Interior of the SNIF multi-GAS enclosure on Mount St. Helens, Washington

USGS scientist Laura Clor performing maintenance on the SNIF multi-GAS station on Mount St. Helens, Washington.

Black streak on caldera wall (center) is about 50 m (yards) long, and white steam plume (lower right) rises from northwestern part of Halema‘uma‘u. Photo from Volcano House Hotel on July 4, 2018. The configuration of this area changed considerably after the photo was taken, as collapse continued into early August. USGS photo.

Lake George, New York, in the fall with a dock and watercraft.

Small plants grow beneath the needles of a Bishop pine

The KWcam webcam at Kīlauea's summit captured a rainbow over the water lake in Halema‘uma‘u this afternoon, as light mist moved across the caldera.

Now that Forster’s terns have returned to nesting in Pond A16, an important nesting colony has been re-established, with hopes that this tern colony will grow in future years and help reverse the decline of the Forster’s tern population in San Francisco Bay.

USGS Scientists Map Nutrients on Sacramento Delta

The USGS Remote Sensing Coastal Change Project collected aerial imagery of the northern Outer Banks, North Carolina coastline from pre- and post-Hurricane Isaias, in order to use Structure-from-Motion techniques to produce digital elevation models (DEMs) and orthomosaic photos, to be used in evaluating the storm-induced coastal change, such as sand transported onto

This USGS streamgage on Schantz Spring near Wescosville, Pennsylvania was partially submerged after floodwaters from Tropical Storm Isaias quickly rose and flooded the area.

Fisseha Mengistu, USGS hydrologic technician, uses a device that lowers a water sampler into the creek below to collect samples used for water quality testing. Experts will be able to use this data to track how Tropical Storm Isaias impacted water quality in the area. This work was done on Rock Creek in Washington, D.C.

Researchers taking aquatic insect samples in a high-elevation Glacier National Park stream as part of ecohydrological monitoring efforts to study the effects of climate change on aquatic species and ecosystems. 

USGS coastal change experts predict that storm waves kicked up by the Category 1 hurricane are likely to cause some erosion at the base of the dunes along about 11 percent of coastal beaches between Florida and Virginia.

This rapid deployment gauge was installed August 1 in Swansboro, North Carolina on the White Oak River to monitor water levels in order track potential flooding caused by Tropical Storm Isaias. Photo by Bryce McClenney, USGS. 

Thin section image of a lava sample from Yellowstone using a polarizing microscope. The mineral assemblage is representative of many of Yellowstone’s basaltic rocks. The three large and colored crystals (known as phenocrysts) in the center of the image are the mineral olivine.

This USGS storm tide sensor was installed August 1 in North Myrtle Beach, South Carolina to measure the coastal impacts of Hurricane Isaias. Photo by Joshua Lee, USGS.

This timelapse video at Kīlauea's summit covers approximately 30 minutes and shows the dynamic nature of the water lake in Halema‘uma‘u crater. Steam from the hot water surface is constantly shifting in the winds, while the migrating color boundaries on the water surface appear to show circulation in the lake. USGS video by M. Patrick.

Plot showing rise of Kīlauea's summit crater lake over the past year, during which laser rangefinder measurements of lake level were made 2–3 times per week. Photos compare the lake on August 27, 2019, when it was ~22 ft (7 m) deep, to July 7, 2020, when it was ~130 ft (40 m) deep. USGS photos.